Hi Alex, On 3/17/21 11:18 PM, Alex Williamson wrote:
{MAP, 0x0, 0xc0000000}, --------------------------------- (b) use GDB to pause at here, and then DMA read IOVA=0,IOVA 0 seems to be a special one. Have you verified with other addresses than IOVA 0?It is??? That would be a problem.
No problem from hardware point of view as far as I can see. Just thought about software might handle it specially. Best regards, baolu